Home / 143,083.56-197,457.63-78,558.75

Finding the Fourth Proportional to 143,083.56, 197,457.63 and 78,558.75

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Solution

The fourth proportional to 143,083.56, 197,457.63 and 78,558.75 is: 108,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,083.56 : 197,457.63 = 78,558.75 : x
  2. Step 2: Convert to fraction form
    143,083.56/197,457.63 = 78,558.75/x
  3. Step 3: Cross multiply
    143,083.56x = 197,457.63 × 78,558.75
  4. Step 4: Simplify right side
    143,083.56x = 15,512,024,590.76
  5. Step 5: Solve for x
    x = 15,512,024,590.76/143,083.56
  6. Step 6: Final answer
    x = 108,412.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.